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公开(公告)号：US20170338989A1
公开(公告)日：2017-11-23
申请号：US15674154
申请日：2017-08-10
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04L27/2621 , H04L5/0053 , H04L27/262 , H04L27/2627 , H04W84/12
Abstract: A peak-to-average ratio reduction method, including dividing subcarriers of an orthogonal frequency division multiplexing (OFDM) symbol that carries to-be-transmitted data to obtain multiple blocks, determining multiple phase factors corresponding to the multiple blocks, where the multiple phase factors reduce a peak-to-average ratio of the OFDM symbol, transmitting the multiple phase factors using a particular subcarrier of the OFDM symbol, multiplying data transmitted on each block in the multiple blocks by a corresponding phase factor, and transmitting data obtained by means of multiplication. Phase factor information of each block is transmitted using the particular subcarrier such that application of a partial transmit sequence (PTS) method in a WI-FI system becomes possible, thereby effectively reducing a peak-to-average power ratio (PAPR) of data.
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52.发明授权公开(公告)号：US12218879B2
公开(公告)日：2025-02-04
申请号：US18475022
申请日：2023-09-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ming Gan , Shimon Shilo , Leonid Epstein , Oded Redlich , Xun Yang , Tao Wu
Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.
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公开(公告)号：US20240056399A1
公开(公告)日：2024-02-15
申请号：US18494436
申请日：2023-10-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu , Jian Yan , Bingquan Wang , Lei Han , Xiangyu Gong , Huafeng Wen
CPC classification number: H04L47/30 , H04L47/6215
Abstract: A first communication apparatus obtains a sampling cycle. The sampling cycle is a time interval at which the first communication apparatus samples occupancy of a first buffer. The first buffer is used to store a data packet of a first priority. The first communication apparatus determines occupancy of the first buffer at a first sampling moment based on the sampling cycle. The first communication apparatus determines first duration based on the sampling cycle and the occupancy of the first buffer at the first sampling moment. The first duration is duration for which a second communication apparatus stops sending data to the first communication apparatus. The first communication apparatus sends first indication information to the second communication apparatus based on the first duration.
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54.发明授权公开(公告)号：US11582008B2
公开(公告)日：2023-02-14
申请号：US17696427
申请日：2022-03-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ming Gan , Shimon Shilo , Leonid Epstein , Oded Redlich , Xun Yang , Tao Wu
Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.
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公开(公告)号：US11496190B2
公开(公告)日：2022-11-08
申请号：US17012263
申请日：2020-09-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ming Gan , Jingjing Huang , Dandan Liang , Tao Wu
IPC: H04B7/0491 , H04B7/06 , H04B7/08 , H04L5/14
Abstract: This application provides a full-duplex communication method and an apparatus. The method includes: when sending a first signal to a first device by using a first transmit sector, receiving, by a third device by using a first receive sector, a second signal sent by a second device. A coverage area of the third device in a receiving direction may be divided into at least one receive sector, the at least one receive sector forms one receive sector group, and the third device may receive the second signal by using the first receive sector that is in the receive sector group and that is different from the first transmit sector. In this way, the third device can simultaneously receive a signal and send a signal by using different sectors, to implement full-duplex transmission, and reduce mutual interference between signal sending and signal receiving, thereby improving communication quality of the full-duplex transmission.
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Patent Agency Ranking
公开(公告)号：US11444818B2
公开(公告)日：2022-09-13
申请号：US17080311
申请日：2020-10-26
Applicant: Huawei Technologies Co., Ltd.
Abstract: A signal transmission method includes: combining a plurality of low-order modulated signals into N modulated signals; and transmitting the N modulated signals on N subcarriers, where the N subcarriers are subcarriers on frequency domain resources of M channels, an nth modulated signal in the N modulated signals is transmitted on an nth subcarrier in the N subcarriers, N is an integer greater than or equal to 2, M is an integer greater than or equal to 2, and n=1, 2, . . . , N. The signal transmission method can improve efficiency of a diversity gain.
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公开(公告)号：US20220094625A1
公开(公告)日：2022-03-24
申请号：US17540254
申请日：2021-12-02
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Tao Wu , Jian Yan , Xitong Jia , Heyang Liu , Fei Chen , Xiangyu Gong
IPC: H04L45/128 , H04L45/44 , H04L69/166 , H04L12/18
Abstract: Embodiments of this application disclose a collective communication method, apparatus, and system. The method includes: A first network device receives a first packet; the first network device receives at least one second packet; and the first network device sends a third packet based on the first packet and the at least one second packet. When no connection is established between the first network device and a terminal device, the first network device may aggregate and distribute collective communication packets by using a connection between the first terminal device and another terminal device.
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公开(公告)号：US11160063B2
公开(公告)日：2021-10-26
申请号：US16676712
申请日：2019-11-07
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: Example channel feedback information transmission methods are disclosed. In one example method, a terminal performs channel estimation on a subcarrier on which a downlink pilot is located, and obtains first channel information. The terminal performs a channel interpolation calculation on a channel of a data subcarrier according to the first channel information, and obtains second channel information according to a result of the channel interpolation calculation. The terminal determines a feedback factor, and obtains third channel information from the second channel information according to the feedback factor, where an amount of the third channel information is less than an amount of the second channel information. The terminal feeds back the third channel information to a base station. Some channel information is selected and fed back by means of a feedback factor.
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公开(公告)号：US10673677B2
公开(公告)日：2020-06-02
申请号：US16179449
申请日：2018-11-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tao Wu
Abstract: Embodiments of the present disclosure describe a single carrier-based data transmission method and apparatus. The method may include generating a frame and sending the frame. A data part of the frame includes 2N data blocks, the 2N data blocks are arranged in a sequence from the first data block to the 2Nth data block. Furthermore, the data block includes a payload part and a guard interval (GI), payload parts of different data blocks are separated by GIs, and a payload part of the 2Nth data block is obtained by multiplying a payload part of the (2n−1)th data block by a phase-shift sequence, where n=1, 2, . . . , N, and N is an integer greater than 0. By using the foregoing manner, data transmission robustness can be improved and data transmission for a longer distance can be supported.
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公开(公告)号：US20200162934A1
公开(公告)日：2020-05-21
申请号：US16749477
申请日：2020-01-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu , Teyan Chen
Abstract: An information transmission method and apparatus, the method including determining, by a first communications apparatus, an area in which a terminal device is located, where the area includes overlapping coverage area between the first communications apparatus and at least one second communications apparatus, and, non-overlapping coverage area between the first communications apparatus and the at least one second communications apparatus, and the first communications apparatus is adjacent to the at least one second communications apparatus, and sending, by the first communications apparatus, information to the terminal device through a first channel if the terminal device is located in the overlapping coverage area, and sending, by the first communications apparatus, information to the terminal device through a second channel if the terminal device is located in the non-overlapping coverage areas.
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